sksl can now fold constant vector or matrix equality expressions

Bug: skia:
Change-Id: Icaddae68e53ed3629bcdc04b5f0b541d9e4398e2
Reviewed-on: https://skia-review.googlesource.com/14260
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Ben Wagner <benjaminwagner@google.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/sksl/ir/SkSLFloatLiteral.h b/src/sksl/ir/SkSLFloatLiteral.h
index 8f83e2866c..21a485fb0a 100644
--- a/src/sksl/ir/SkSLFloatLiteral.h
+++ b/src/sksl/ir/SkSLFloatLiteral.h
@@ -34,6 +34,11 @@ struct FloatLiteral : public Expression {
         return true;
     }
 
+    bool compareConstant(const Context& context, const Expression& other) const override {
+        FloatLiteral& f = (FloatLiteral&) other;
+        return fValue == f.fValue;
+    }
+
     const double fValue;
 
     typedef Expression INHERITED;